Self-inking hand stamp



Feb, 1o, 1925.

M. RUMFF SELF INKING HAND STAMP( Filed July 17, 1922 5 Sheets-Sheet el Feb. '10, 1925.V 1,525,659 M. Ruwn=u=A n szLF INKINQHAND STAMP K l med July 17, 1922 5 sheets-smet 2 l is 4mm/EVS.

Feb. l0, 1925. 1,525,659

` M. RUMPF SELF INKING HAND STAI? Filed July 17, 1922 5 Sheets-Sheet 3 /WA X. RUMPF. MTA/55. 27)./

Feb. 101 1925- Y M. RUMPF SELF 'mmm HAND ,s'rAuP Filed July 17, 1922 5 Sheets-Sheet 4 Feb. l0, 1925. 1,525,659

` M. RUMPF SELF INKING HAND sul? Filed July 17, 1922 5 sheets-sheet 5v IN1/swing MA x. ffl/MPF.

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Patented Feb. 10, 1925.

PATENT OFFICE.

MAX RUIVIPF, OF CHICAGO, ILLNOS.

SELF-INKING HAND STAM?.

Application iiled July/17, i922.

i' 1o all whom t may concor/n- Be it known that l, MAX RUivrrr, a citizen of the United States, residing in the city of Chicago, in the county of Coolr and the State of Illinois, have invented certain new and useful Improvements 1n Self-lnlnng K vide an improved construction of a hand operated stamp bearing a plurality of printing elements, and adapted to be adjusted to bring any selected printing face into printing position, the specific purposes of the invention being to provide improved means for selecting and setting at the printing position the desired printing face, and improved means for inlring the stamp in the initial depression, and withdrawing the inking pad out of the pathof descent of thc stamp without wiping or dragging motion upon the stamp. It consists in the elements and features of construction shown and described, as indicated in the claims.

In the drawings Figure l is a front elevation of the hand stamping device embodying this invention.

Figure 2 is a right hand side or operating side elevation of the same.

Figure 3 is a section at the line, 3-3, on Figure 2. i

Figure i is a sectiony atythe line, 4.-4, on Figure 3, showing all parts in the position of rest. i

Figure 5 is a left hand side elevation of the stamp showing the stamp-carrying rotor depressed suiiciently for bringing the stamping printing face in contact with the inking pad, in position of use with all parts at rest.

Figure 6 is a similarl view showing the plunger and rotor further depressed while the stamp remains in inlring contact with the pad, the pad carrier being depressed at the same time. p Y

Figure 7 is a similar view showing the stai-np carrying rotor further depressed and the inking pad depressed more than the rotor for clearing' inking pad away from the printing face by direct movement.

Figure 8 is a siinliar view showingthe stamp fully depressed, the inking pad forming a part Serial No, 575,445.

swung aside and the printing `face in printing position.

Figure 9 is a detail assembled view of the levers and their supports by which the action of the inlring pad is controlled.

Figure l0 is a dissected view of the parts shown in Figure 9, showing each part in elevation.

The structure shown in the drawings comprises a frame or supporting structure consisting of end standards, l, l, cross-head, la, a plunger comprising side arms, 2, 2, crosshead, 2a, and a stem, 2b,l which is provided at the upper end with an operating handle, 20. rlhe cross-head, l, of the stem has a boss, 1, constituting a guide hearing for a stern, 2b, of the plunger.

In the lower ends of the plunger arms, 2, 2, there is journaled a shaft, 5, for a rotor stamp carrier, 6 which is mounted on said shaft, 5, rigid therewith between the two arms of the plunger; and said shaft is eX- tended beyond said arms forming trunnions, 5a, 5a, which afford guidance for the plunger in the standard, being extended out through the said standards, l, l, which arevertically slotted as seen at la for that purpose.

The inlr pad carrier is provided with side arms, 7, 7, connected hy a cross bar, 7. Said ink pad carrier is mounted upon the shaft, 5, for pivotal action there-about, having limited means of lost `motion vertically with respect thereto by means of the elongation of the apertures, 7b, 7b, by which it is thus pivotally hung on the shaft.

The ink pad carrier is controlled in its 'position and movement by levers, 8 and 9,

which are. both pivoted at their upper outer ends on an arm lb, extending rigidly rearward from the standard, l. The construction comprising said levers, S and 9, and said supporting arm, lb, being duplicated at both ends of the rotor, that is, adjacent and with respect to both standards, l, l. rlh-e arms, 1b, project, as stated, from the standards, l, l, respectively, at a position in the height of said standards for locating the pivotal connection of the levers` S and 9, somewhat above the level of the shaft, 5, at the highest position of said shaft, so that said levers trend downwardly and forwardly for their co-operation with the plunger and with the ink pad carrier. Said nio-operation with the pad carrier is effected by means 'of headed Cil studs, 7C, constituting abut-ments projecting trom the side arms, 7, 7, respectively, below and abo-ve said levers, 8 and 9, respectively, and with the plunger, by t-he trunnions or projecting portions ot the shaft, 5, and collars, 5a, thereon, constituting and hereinafter referred to as abutments7 on the plunger, said levers both extending below said abutments, 5, the abutments, 7C, being between the two levers as above indicated. The two levers, 8 and 9, are connected for their proper co-operation by means of a third lever, 10, fulcrumed at 10a, upon the side arm, 1, (the construction being duplicated both sides ot the plunger,) and has its tree end extended in the cam head, 10b, which bears upon a stud, Sa, projecting laterally from the lever, 8; and a spring, 11, connected at its lower end to the lever, 9, and at its upper end to a laterally projecting stud, 10, midway in the length ot said third lever, 10, operates for stressing the lever, 9, toward the lever, 10, which, in view of the stoppage of the free end of the lever, 9, against the abutment, 8, on the side arm of the ink pad carrier, tends to hold the lever, 10, pulled downwardly and the cross-head cam member, 10b, pressed upon the laterally projecting abutment, 8, of the lever, 8; and the lever, 10, and the levers, S and 9, are all pivoted to the same part, namely, the standard, 1. The total eii'ect ot the entire organization consisting of the levers, 8, 9 and 10, and the connecting spring, 11, is that the spring reacting at one end through the leve-r, l0, and lever, 8, stopped at its tree end against the plunger' abutment, 5", and at the other end reacting on the lever, 9, to press the tree end of said lever, 9, against the pad carrier abutment, 7, operates to press the inl( pad carrier up to the limit which is determined by the depth-upwardly-of a notch, 16, formed as a guideway in a plate, 17, mounted on the inner side of each standard, 1, for engaging guide-and-stop projections, 15, iixed on the lower ends ot' the pad carrier side arms, 7.

By the same spring means and lever connections, described, the plunger is upheld to the upper limit, which is fixed by the upper end ot the elongated pivot slots, 7b, in the pad carrier side arms, 7, being reached by the trunnions, 5a, on which the pad carrier is connected with the plunger. The result ot this construction, it will be seen, is that the plunger is upheld so as tov space the printing tace of the stamp above the inking tace ot t-he ink pad a distance which may be the amountof elongation ot said pivot slots, 7b; and to space the lower edge of the lever, S. above the pad carrier abutment, 7C, a similar distance (see Figure 9). And the purpose, it will be understood, is to cause the pad carrier to continue to be upheld to the position indicated while the plunger is depressed the amount ot the spacing stated to bring the printing face into inking contact with the pad.

The parts mentioned are in detail turther formed so that during a further depression of the plunger after the stamp tace is in inling contact with the pad, the pad and thel plunger are depressed together Jtor a short distance adequate tor insuring the transference of ink from the pad to the printing tace. ln order that after this inling contact has been obtained the printing lace and the inling surface may be separated by direct withdrawal of the one troni the other betere the lateral swing of the pad for taking it out of the path ot the plunger is peri'orniech-avoiding dragging the pad over the printing tace and smearing the latter,--the upper edge of the end portion of the lever, 9, which is engaged under the plunger abutment is termed sloping relatively upward and away from the lever tulcrum adapting said portion to operate as a cani against the plunger abutment, 5, in the lateral movement ot' said lever which results from thtA oownward movement ot the plunger and of the lower edge ot said lever, S, to torce the pad. carrier abutment, 7C, down faster than the plunger is descending, thus effecting the desired direct separation of the pad trom the stamp tace.

rlhis action continues until by the lateral swing of the levers, S and 9, the hook terminals, 8b and 9b, oit said levers reach the pad carrier abutment, 7. During the depression of the. plunger to this point the inl: pad carrier is held to a vertical course and prevented from swinging laterally by engagement, as above described, oi' the projections, 15, at the lower end of the pad carrier side arms in the guideways, 16, formed in guide plates, 17, mounted upon the inner side ot the standards, 1, 1, respectively, and the said projec-- tions, 15, reach the endl of said guideway and are in position to pass out oi it laterally` when the abutments, 7c, encounter the hook terminals, Sb and 9b; and 'further depression ot' the plunger auses said terminals to swing the pad carrier aside. taking the guide projections, 15, out oi the guideways, 17, and clearing the path ot' the stamp to printing position, as seen in Figure 7.

The stamp carrier. 6, is a rotor, stated, mounted upon the shaft, 5, 'tor rotating thereabout, said rotor having a multiplicity ot paraXial seats or faces, adapted each for carrying a stamp, so that when the stamps are thus mounted upon the rotor, the rotor has a. multiplicity ot paraxial printing tacos. The means are hereinatter described, serving to rock the rotor, to cause it to present any selected printing face or seat tor a printing stamp as the lower side, that is, positioned to be advanced or pressed downward upon the paper tor printing. The rotor stamp oarrier, 6, is'constructed in 'all respects substantially as shown and describedin patent of `myself and lV. E. Nima, No. 1,356,172, dated `October 19, 1920, and this construction need not be further described here.v`

The means for adjusting the rotor stamp carrier to bring any desired stamp at printing position and for indicatingthat printing position without operation of the stamp for printing, as would be necessary in the absence of any special provision, because the stamp is concealed by the ink pad and cannot be examined directly, constitute an important feature of this invention and so far as the device is in this respectdifferent from that of said Patent No. 1,356,172, it will be now described.

The shaft, 5, is provided at Lhe right hand end with a crank handle, 25; back of said crank handle there is mounted rigid with the standard, 1, and spaced away therefrom, a notched disk, 26, having in its periphery as many equally spaced notches 26a as there are stamp-carrying faces on the rotor. The crank handle has its radially extending arm or lever double,-that is, comprising two parts, 27a and 27 b, the former rigid with the shaft, l5, and the latter engaged with the shaft and with the bar, 27a, below the shaft at a stud, 27d, and provided at its upper end with the operating handle, 25, and with a tooth, 28, for engaging the notches 26c1 of the disk, 26, that tooth being formed by a projection which is bent inwardfrom the arm, 27D, over the end of the arm, 27a, which is notched at the end as seen at 27C, for engaging the projection and preserving` the two arms in alignment, and at the inner side of the arm, 27", this tooth is bent inward radially formino` a hook which overhangs the periphery of the notched disk and is adapted to be engaged with the notches by the reaction of the spring, 20, which tends to separate the two lever arms and retract the hook outwardly. The operator will press the knob or operating handle, 27, inwardly for disengaging the tooth from the notches, preparatory to swinging the lever around the disk for a different engagement. A stop stud, 26d, projects from the outer side of the disk for encounter of the arm, 27, at which may be called the Zero or no-stamp position, if one of the stamp holding faces of the rotor is left empty, or to the position of the most usually used stamp to be mounted upon this face. By this means it will be seen that the rotor stamp carrier can be adjustedto bring any desired space at printing position.

ln order to indicate to the operator what stamp is at printing position, there is provided an index panel, 30, in the form of a segment of a cylinder about the rotor axis, which is mounted by a radial arm, 31, on the shaft of the rotor, and isheld in fixed position by means of the spring finger, 30, having a pin, 30", which engages an aperture, 2X, in the cross bar, 2a. of the plunger which carries the rotor. This segment extends over the upper forward quarter of the rotor and carries an index sheet preferably removable so as to be interchangeable from time to time, containing a list of the. several stamps carried by the rotor, one line being allotted to each stamp title, as seen clearly in Fig. 1. For co-operating with the quadrant or segment index, 30, there is provided an index finger, 32a, which projects off laterally from a radial arm, 32, of a gea segment` 33, which is mounted for rotation on and about the shaft, 5, at the left hand side of the rotor, the finger 32, overhanging the index panel Vat the left hand margin i thereof, as seen clearly in Figure 1. For operating the index finger to cause it to move over the index panel, 30, from line to line thereof, as the rotor is turned from stamp-carrying face to stamp-carrying face, there is provided, fast on the shaft, 5, a gear pinion, 35, which meshesl with the peripheral gear teeth, 37, of the double gear segment member, 3S, which is pivo'ted to the left hand side bar of the rotor-carrying plunger', at 39, preferably, as shown, in vertical line with the axis of the shaft, An interior gear, 1li), on this segment meshes with the teeth of the gear segment, 3B, which has the index linger, 32, above described. The dimensions of the several co-operating gear members, to-wit,-- the pinion, 35, the gear segment, 37, the gear segment, 40, and the gear segment, 33, are calculated to cause that the rotation of the shaft, 5, by rotation of the crank handle, 25, from one side to the other of stop stud, 27, shall rock the index finger from registration with the top line to registration with the bottom line of the index, the not1hes in the disk, 26, being positioned to engage the crank handle at the position of registration of the index vfinger with the index lines respectively For convenience of inserting and securing the ink pad on theI pad carrier, the pad holding` pan, 70, which is dimensioned for seating on the cross-bar, 7, of the pad carrier, has a laterally projecting handle, 7l, to which there is pivoted at 71a a latch member, 72, which extends under the bar, 7 and has an upwardly projecting stud or finger, 73, which engages the aperture, '7-1, in said bar, 7. The latih member has an extension, 75, constituting a handle opposed to the handle,

4 71; and a sarinO, 76. inter Dosed between the f l e.

two handles reacts for holding the finger, 7?, engaged in the aperture, 74C, when the pad had been seated at correct position on the bar, 7. .lt will be understood that the operator, grasping the two handles and pressing them together may disengage the linger, 7 from the aperture, 74, and withdraw the ink pad bodily from the bar, 7, and similarly holding the handles pressed together while enteringthe pan above the cross-bar he will release the handles and slide the pan in until the linger snaps into the aperture.

I claim l. In combination with a 'trame and a stamp carrying plunger mounted for reciprocation therein, an ink pad carrier suspended from the plunger pivot-ally for swinging laterally out from below the stamp-carrying end oi the plunger` with a short vertical range ot lost motion at its pivot; a lever having its fulcrum on the standard at a distance laterally oil from the vertical path of re iprocation ot the plunger, and extending down inwardly alongside the suspending arms of the pad carrier, the latter having an abutmenty above which the free end of the lever extends, the plunger having an abutment below which the lever extends, spring-pressed means yieldingly upholding the lever against the abutment above, and connections from said spring-pressed means engaging the pad carrier to uphold it.

2. In a device for the purpose indicated, in combination with a frame and a stamp-carrying plunger mounted for reciprocation therein; a yieldingly upheld inkpad-carrier vsuspended from the plunger pivotally for swinging laterally out from below the stamp on the, plunger with a short vertical range of lost motion at its pivot; a lever having its fulcrum pivot on the standard at a distance laterally ofi' from the vertical path of reciprocation of the plunger, and extending thence downward and inward alongside the suspending arm ot the ink pad carrier, the plunger having an abutment below which the lever extends, and the ink pad carrier having an abutment above which the lever extends; spring means yieldingly upholding the lever against the plunger abutment for upholding thev plungergineans tor stopping the pad carrier upwardly at a position at which its said abutment is spaced below said lever a distance for spacing the stamp face away from the inking pad prior to the initial descending movement ot the plunger'.

3. In the construction defined in claim 1, foregoing, the end portion ot the lever which is spring-pressed against the plunger abutf ment being formed as a cam having its edge which encounters the abutment trending upwardly and away from the lever fulcrum, outwardly from the point of encounter with the plunger abutment at undepressed position of the plunger, for causing the lever to t'orce the pad carrier abutment downward at the portion of the depression of the plunger faster than the plunger is depressed, for withdrawing the pad from the printing face of the stamp.

4t. In the construction defined in claim l, foregoing, the lever having a hook for engaging theA pad carrier abutment after a limited lateral swing of the lever, to swing the pad carrier laterally out from under the plunger during the latter part oi' the plungers descent.

5f. In the construction defined inV claim l, foregoing, connections for upholding the pad carrier comprising a second lever tulcrumed approximately to the first lever, engaging by its free end the pad carrier abutment and spring-pressed upwardly, said lever having ahook for engaging the pad carrier abutment after a limited lateral swing ot' the lever, to; swing the pad carrier laterally out from under the plunger duringi the later part of the plungers descent, the cam edge of the lever link being formed toward its outer extremity for substantially vertical position at the laterally out-swung position of the leve-r link for holding the pad out of the plungers path.

G. In the construction delined in claim l, foregoing, connections for upholding the pad carrier comprising a. second lever 'tulcrumed approximately to thev first lever, engaging by its tree end thepad carrier abutmentand spring-pressed upwardly, said lever having a hook for engaging the pad carrier abutment at the limited lateral swing ot the lever to swing the pad carrier laterally out from under the plunger during the later part of the plungers descent; co-operating guide means on the standard and pad carrier for keeping theY pad carrier in. a vertical path during the movement for inking the stamp and withdrawing the pad from the stamp, said guide means being cut away t'or escape of said co-operating guide means from each other at ther point in the descent at which the hook of the lever link encounters the abutment of the pad carrier.

7. In the construction defined in claim l,

foregoing, the means for yieldingly uphold-r ing the pad carrier7 being a lever fnlcrumed on the standard at one end and at the other end stopped against the previously mentioned lever, a thirdl lever fulcrumed on the standard and extending under the pad carrier abutment, and a spring connecting the second and third levers between their ends.

8. In the construction defined! in claim l, -foregoing, the means for yieldingly upholding the lever mentioned against the plunger abutment, being an additional lever fulcrumed on the standard and extended from its tulcrum in a direction terminating at a position for swinging its said terminal inward, toward the path ot reciprocation of the plunger abutment, by the downward swinging of saidv additional lever about its tulcrum; and a' spring connected to said additional lever for so swinging it, the first lever mentioned having an abutment positioned for encounter with the end of said additional lever in such swinging of the latter.

9. In a self-inl ing stamp, in combination with a frame and a stamp carrying plunger mounted for reciprocation therein; an ink pad carrier suspended from the plunger with `limited vertical range of lost motion at its point `of suspension; spring means for yieldingly upholding the pad carrier; a stop on the frame for limiting the upward movement of the pad carrier at a position of the inling pad short of the printing face of the stamp on the plunger; a lever pivoted on the frame at a distance laterally from the path of reciprocation of the plunger abutment and above the level of the highest position of said abutment, spring pressed upwardly against said abutment -for yieldingly upholding the plunger out of contact of the printing face with the inking pad, the inking pad carrier having an abutment projecting into the path of the downward swing of the lever spaced therefrom when the lever is in contact with the plunger abutment a predetermined disance corresponding to the clearance between the printing face of the stamp and the inking pad at the undepressed position of both. l

1l). lu the construction delined in claim 9 foregoing, said lever having its end portion which makes contact with the plunger abutment formed as to its upper edge to constitute a cam up-raise or vertical widening of said end portion, whereby the lateral swinging movement of the lever which accompanies its down swinging, draws said cam or widened end portion between the plunger abutment and the pad carrier abutment, and depresses the pad carrier away from the printing face of the stamp on the plunger.

11. In the construction defined in claim 9, foregoing, the lever being terminated by a hook member which engages the plunger abutment laterally after a limited lateral swinging movement which accompanies the down swinging movement of the lever; whereby the continued depression of the lever by the plunger causes said lever to swing the pad carrier laterally out from under the plunger'.

12. In the construction defined in claim 9, foregoing, the means for yieldingly upholding the pad carrier, comprising a lever fulcrumed on the frame at a distance laterally from the path of reciprocation of the point of suspension of the pad carrier and engaging under the abutment of the pad carrier, and a spring reacting between said lever and the frame for upholding the free end of the lever, said lever having a terminal hook for encountering laterally the abutment on the pad carrier in the lateral swinging of said lever to accompany its downward swinging movement, whereby after a limited downward swinging of the lever and depression of the pad carrier, further depression of the pad carrier causes it to be swung laterally by said hook lever to take the pad out of the plunger.

13. In a self-inlzing pad1 in combination with a frame and a plunger mounted for reciprocation therein, a rotor carried by the plunger having a multiplicity of paraXially extended faces, each adapted for having mounted thereon a printing stamp; means for rotatively adjusting the rotor about its axis on the plunger, `an index panel mounted on the frame in fixed position; an index llinger mounted on the frame for movement of its point over the panel; a gear on the rotor; a gear segment which carries the inder; linger, and gear means intermediate the gear and gear segment for giving the finger reduced angular movement in comparison with the gear on the rotor.

lll. In the construction delined in claim 13, foregoing, the index panel being a seg ment of a cylinder about the rotor axis, the index-linger-carrying gear segment being mounted on the rotor shaft, and the intern'iediate gear elementl being a sector having two concentric gear segments meshing respectively with the gear and the gear segment on the rotor shaft.

In testimony whereof.I I have hereunto set my hand at Chicago, Illinois, this 14th day of July, 1922.

MAX RUMPF. 

